Demonstrator of optical phenomena in a case



FIG. 1 is a top plan view of a demonstrator of optical phenomena in acase, the case being open, showing our new design.

FIG. 2 is a front elevational view thereof.

FIG. 3 is a right side elevational view thereof.

FIG. 4 is a left side elevational view thereof.

FIG. 5 is a front perspective view thereof.

FIG. 6 is a right side perspective view thereof; and,

FIG. 7 is a front perspective view thereof, the case being closed.

The bottom and rear views of the demonstrator of optical phenomena in acase are not shown and form no part of the claimed invention.

The ornamental design for a demonstrator of optical phenomena in a case,as shown and described.